Slide fastener



D. I. REITER SLIDE FASTENER Filed April 1, 1936 Aug. 31, 1937.

INVENTOR ATTORNEYS.

Patented Aug. 31, 1937 UNITED STATES PATENT OFFICE suns mas-muse Daniel I. lteiter, New York, N. Y., assignor to Gilda Corporation of America, New York, N. Y.. a corporation of New York Application April 1, 1936, Serial No. 71,995 4 Claims. (01. 24-207) -edly connected at spaced distances along a flex- 10 ible element, the fastening members in turn being slidably associated with the bead edges'of an opening .to be closed to draw the edges together when the fastening device is in closed position, and for releasing the'bead edges to facilitate 15 spreading of the walls of the opening when the fastening device is in open position. The main object of this invention is to reduce the friction between the slide fastener members and the edges of the article on which they are captively and 20 slidably associated which will provide a freer sliding movement of the fastener members to prevent accidental jamming of the same during sliding movement, and to reduce wear of thematerial from which the article is constructed. Another feature of the invention resides .in a

. slide fastener device having the above mentioned feature which does not increase the cost of manufacture over that of the slide fastener device set forth in the above mentioned patent.

30 A further feature of the invention'is to provide the attaching eyes of each U-shaped slide fastener member inwardly of the terminal end of one of the legs thereof to permit opposed inwardly extending anti-friction surfaces to be formed 35 at-the terminal ends of the-legs.

Other objects of the invention will appear as the following specification is read in conjunction with the accompanying drawing, in which,

Figure 1 is a perspective view of a bag equipped 40 with my improved slide fastener device.

Figure 2 is an enlarged vertical transverse sectional view on the line 2 of Figure 1.

Figure 3 is a detail perspective view of one.-

of the slide fastener members per se.

45 Figure 4 is a rear elevational view of one of theslide fastener members.

Figure 5 is an enlarged vertical sectional view on the line 5-5 of Figure 4. Figures sand 7 are vertical sectional views of 50 slight modifications.

Referring to the drawing by reference charac-- ters,'the numeral III designates my improved slide fastener device in its entirety and which is shown in Figures 1 and 2 of the drawing as being opera- 55 tively associated with'a bag H. The bag It may be constructed of any flexible material, one side of which is open as at l2, the edges of the walls of 'the bag at the opening I! being formed with offset beads l3l3'. The beads l3 are offset so v that when the walls of the bag are brought together in closed relation, one bead laps the other as clearly shown in Figure 2 of the drawing.

The slide fastener device Ill includes a plurality of substantially U-shaped slide fastener members a. which are fixedly connected at spaced 10 distances to a flexible element in the form of a chain l5.

Each of the slide fastener members It is constructed of a single piece of flat still" bendable metal, the same being bent into substantially U-shape to provide a rounded bight portion l6 and straight leg portions ll and I8. The terminal end of the leg portion 18 is bent inwardly as at 19 and thence outwardly to provide a terminal flange 20 which is disposed substantially 20 parallel to the major portion of the leg l8. Punched inwardly from the flange 20 inwardly of the edges thereof is a teat or protuberance 2|,

,the inner end of which is rounded. The flange 20 coacts with the terminal end of the leg I'I to provide a restricted entrance to the fastener device.

The leg I! has its terminal end provided with an inwardly punched teat or protuberance 22, the same being disposed opposite the teat 2| and having its inner side rounded. The inner ends of the teats 2| and 22 are rounded or convex to pro-' vide a minimum bearing contact with the side walls of the bag H.

The leg l8 of each fastener member ll inwardly of the-be I9 is provided with a punched out closed eye 3. The slide fastener members ll are secured to the flexible element I5, by passing the element through the eyes 20, the said eyes being of suiiicient size to permit of the threading 40 of the flexible element therethrough, after which the fastener members are secured at spaced distances along the flexible element by pressing the eyes inwardly for clamping engagement therewith as shown in Figure 2 of the drawin ',Prior to the application of the slide fastener device II to the bag H, the U-shaped slide fastener members H are relatively open, but during attachment of the fastener device to the beadededges ll of the bag, the fastener members are I inserted over the beaded edges and pressure applied to the legs [1 and I! to bend them about the said edges to form shown in Figure 2, at which time the beads ll-ll lie within the legs and bight portion, whereas the terminal ends of the legs extend inwardly beyond the plane of the head so that the inwardly extending teats II and 22 slidably contact the exterior side walls of the bag. The teats 2| and 22 provide a minimum contact surface with the side walls of the bag during sliding movement of the fastener members to open and closed position, whereas the restricted entrance formed by the teat prevents accidental pulling off of the fastener members from the beaded edges.

To prevent accidental separation of the slide fastener member Ill from the bag II, it is the practice to captively secure one of the end fastener members 14 to the bag and this anchored member is designated by the letter A. ,Thus, an operator by grasping the other end slide fastener member ll may move the same toward the right in Figure 1 and slide all the fastener members to a position at the right side of the bag, the anchor member A serving as a stop. To close the fastening device, the free end slide member I is pulled toward the left to the position shown in Figure 1. By providing the minimum contacting surfaces between the terminal ends of the legs of the U-shaped fastener members, the friction between the members and the walls of the bag is greatly reduced, thus permitting a freer sliding movement of the slide fastener members and a reduction of wear between the said members and the walls of the bag.

Whereas I have illustrated the fastening device in association with a bag, it will be understood that the fastening device is adaptable for use on many other articles.

In Figure 6 of the drawing, a slight modified form of the invention is shown, wherein a hook 24 is punched from the leg I! of the fastener member, the free end of the hook facing downward. 'I'hehook 24 is bent into the form of an eye after the chain is inserted between the hook and the leg l8 for pressure is applied to the hook to cause the same to tightly embrace the flexible element.

In Figure 7 of the drawing, the same feature of construction is illustrated but the hook 25 is struck from the leg I! to extend in a direction reverse from that shown in Figure 6.

While I have shown and described what I consider'to be the most practical embodiments of my invention, I wish it to be understood that such changes and alterations as come within the scope of the appended claims, may be resorted to if desired.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States, is:-

1. A slide-fastener comprising'a U-shaped-slide member, opposed protuberances extending inwardly from the legs of said U-shape slide member adjacent the terminal ends thereof, and an eye on one of the legs of said U-shape slide member.

2. A slide fastener comprising a U-shaped slide member, opposed teats struck inwardly from the terminal ends of the legs of said U-shaped slide member, and an eye provided on one of the legs of said U-shaped slide member and projectin therefrom. V

3. A slide fastener comprising a U-shaped slide member, an inwardly offset flange provided at the terminal end of one of the legs of said U- shaped slide member and disposed substantially parallel to the terminal end of the other leg thereof, inwardly extending teats provided in the offset flange and in theopposed portion of the other leg of said U-shaped slide member, and an attaching element on one of the legs of said U- shaped slide member.

4. A slide fastener comprising a single piece of stiif bendable metal of U-shape having a bight portion and spaced leg portions, and opposed protuberances struck inwardly toward each other 'from the leg portions adjacent the free ends thereof to provide bearing portions adapted to slidabiy engage with the opposed walls of an article when the slide fastener is in use.

DANIEL I. RH'I'ER. 

